期刊
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
卷 23, 期 -, 页码 90-96出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2015.01.025
关键词
Harmonic impact; Modeling; Micro vibration; Amplitude-frequency characteristic; Indoor experiment
资金
- National Natural Science Foundation Major Project of China [51490650]
- Graduate Student Innovation Research Projects of Northeast Petroleum University [YJSCX2014-011 NEPU]
- Youth Academic Backbone Program of Heilongjiang [1254G002]
Modeling of vibration response of rock by harmonic impact is done in this study, and the results of numerical analysis and indoor experiments are presented. Also, the amplitude-frequency characteristic curve of rock in steady state response is investigated based on the principle of vibration. Three main control parameters are considered, including the density of rock, the excitation frequency and the impacting amplitude of the indenter. It is confirmed that when the excitation frequency is the same as the natural frequency of rock, the maximum vibration displacement of rock can be obtained. The vibration response of rock increases with the increase of excitation frequency and impacting amplitude, and decreases with the increase of the density of rock. The vibration characteristics of rock by harmonic impact are validated by numerical analysis and the experimental results. Harmonic vibration impact drilling can greatly enhance the vibration amplitude of rock, and further improve the rate of penetration compared with the conventional drilling. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据